.page-contact {
  --contact-grid-line: rgba(28, 21, 18, 0.08);
  --contact-muted: rgba(28, 21, 18, 0.74);
  --contact-muted-dark: rgba(243, 235, 221, 0.82);
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
}

.page-contact a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-contact .mono-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- 面包屑与首屏 ---------- */

.page-contact .contact-intro {
  padding: clamp(20px, 4vw, 44px) 0 clamp(36px, 6vw, 68px);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    90deg,
    var(--contact-grid-line) 0 1px,
    transparent 1px 88px
  );
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .breadcrumbs a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-contact .breadcrumbs a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-contact .contact-intro__grid {
  display: grid;
  gap: 28px;
}

.page-contact .contact-intro__text .mono-label {
  display: inline-block;
  margin: 0 0 16px;
  padding-inline-start: 10px;
  border-inline-start: 3px solid var(--orange);
  color: var(--signal);
}

.page-contact .contact-intro__text h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(36px, 7vw, 72px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}

.page-contact .contact-intro__lead {
  margin: 0;
  max-width: 42em;
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.78;
  color: var(--contact-muted);
}

.page-contact .contact-intro__panel {
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  border-top: 6px solid var(--orange);
  padding: 22px 20px 24px;
}

.page-contact .contact-intro__panel-tag {
  margin: 0 0 16px;
  color: var(--mint);
}

.page-contact .contact-facts {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .contact-facts__row {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .contact-facts__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .contact-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 19px);
  line-height: 1.4;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 两条联系通道 ---------- */

.page-contact .contact-channels {
  padding: clamp(36px, 6vw, 72px) 0;
  background: var(--paper);
}

.page-contact .contact-channels h2,
.page-contact .contact-scenes h2,
.page-contact .contact-process h2,
.page-contact .contact-response h2 {
  margin: 0 0 clamp(20px, 3vw, 34px);
  font-family: var(--font-display);
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-contact .contact-channels__grid {
  display: grid;
  gap: 24px;
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  border: 2px solid var(--text);
  transition: transform 160ms ease, border-color 160ms ease;
}

.page-contact .channel-card--support {
  background: var(--paper-white);
  border-top-width: 8px;
  border-top-color: var(--orange);
}

.page-contact .channel-card--biz {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--orange);
}

.page-contact .channel-card__head {
  margin-bottom: 16px;
}

.page-contact .channel-card__head .mono-label {
  margin: 0 0 10px;
  color: var(--signal);
}

.page-contact .channel-card--biz .channel-card__head .mono-label {
  color: var(--mint);
}

.page-contact .channel-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-contact .channel-card__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--contact-muted);
}

.page-contact .channel-card--biz .channel-card__body {
  color: var(--contact-muted-dark);
}

.page-contact .channel-list {
  margin: 18px 0 0;
  padding: 16px 0 0;
  list-style: none;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--line-light);
}

.page-contact .channel-card--biz .channel-list {
  border-top-color: var(--line-dark);
}

.page-contact .channel-list li {
  display: grid;
  gap: 4px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--contact-muted);
}

.page-contact .channel-card--biz .channel-list li {
  color: var(--contact-muted-dark);
}

.page-contact .channel-list__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-contact .channel-card--biz .channel-list__key {
  display: block;
  margin-bottom: 2px;
  color: var(--mint);
}

.page-contact .channel-card__media {
  margin-top: 20px;
  border: 1px solid var(--line-light);
  overflow: hidden;
}

.page-contact .channel-card__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .channel-card__note {
  margin: 18px 0 0;
  padding: 12px 14px;
  background: rgba(255, 90, 31, 0.1);
  border-left: 3px solid var(--orange);
  font-size: 13px;
  line-height: 1.65;
  color: var(--text);
}

.page-contact .channel-card__note--dark {
  background: rgba(111, 231, 192, 0.1);
  border-left-color: var(--mint);
  color: var(--contact-muted-dark);
}

.page-contact .channel-card__links {
  margin: 18px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-contact .channel-card__links a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-contact .channel-card__links a:hover {
  color: var(--text);
  border-bottom-color: var(--orange);
}

/* ---------- 回复节奏 ---------- */

.page-contact .contact-response {
  padding: clamp(34px, 5vw, 64px) 0;
  background: var(--harbor);
  color: var(--paper);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .contact-response h2 {
  color: var(--paper);
}

.page-contact .contact-response__grid {
  display: grid;
  gap: 22px;
}

.page-contact .response-item {
  padding-top: 16px;
  border-top: 2px solid var(--orange);
}

.page-contact .response-item__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--ember);
}

.page-contact .response-item h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.25;
  color: var(--paper);
}

.page-contact .response-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--contact-muted-dark);
}

/* ---------- 常见场景 ---------- */

.page-contact .contact-scenes {
  padding: clamp(36px, 6vw, 72px) 0;
  background: var(--paper);
}

.page-contact .contact-scenes__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .contact-scenes__head h2 {
  margin: 0;
}

.page-contact .contact-scenes__sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--contact-muted);
}

.page-contact .scene-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}

.page-contact .scene-card {
  padding: 20px 18px 22px;
  background: var(--paper-white);
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
  transition: background 160ms ease;
}

.page-contact .scene-card:hover {
  background: #fffdf8;
}

.page-contact .scene-card__tag {
  display: inline-block;
  margin: 0 0 10px;
  padding: 2px 10px;
  border: 1px solid var(--line-light);
  border-radius: var(--radius-chip);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--signal);
}

.page-contact .scene-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.42;
}

.page-contact .scene-card p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--contact-muted);
}

.page-contact .scene-card a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-contact .scene-card a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 地址与备案 ---------- */

.page-contact .contact-address {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 320px;
  padding: clamp(48px, 8vw, 88px) 0;
  background: var(--ink);
  color: var(--paper);
}

.page-contact .contact-address__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-contact .contact-address__media img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.45;
}

.page-contact .contact-address::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    rgba(7, 27, 43, 0.95) 0%,
    rgba(7, 27, 43, 0.78) 55%,
    rgba(7, 27, 43, 0.42) 100%
  );
}

.page-contact .contact-address__lines {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: auto;
  z-index: -1;
  opacity: 0.5;
}

.page-contact .contact-address__lines path {
  fill: none;
  stroke: var(--mint);
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
}

.page-contact .contact-address__lines path:nth-child(2) {
  stroke: var(--orange);
  opacity: 0.75;
}

.page-contact .contact-address__text {
  max-width: 620px;
}

.page-contact .contact-address__text .mono-label {
  margin: 0 0 12px;
  color: var(--mint);
  letter-spacing: 0.16em;
}

.page-contact .contact-address__text h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(23px, 4vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-contact .contact-address__text p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--contact-muted-dark);
}

.page-contact .contact-address__meta {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .contact-address__meta li {
  padding: 5px 12px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-chip);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mint);
}

/* ---------- 商务三步 ---------- */

.page-contact .contact-process {
  padding: clamp(38px, 6vw, 74px) 0;
  background: var(--paper-white);
  border-bottom: 1px solid var(--line-light);
}

.page-contact .process-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
  counter-reset: biz-step;
}

.page-contact .process-list li {
  padding: 18px 16px 20px;
  border-left: 2px solid var(--line-light);
}

.page-contact .process-list__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  color: var(--orange);
}

.page-contact .process-list li h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.42;
}

.page-contact .process-list li p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--contact-muted);
}

/* ---------- 延伸阅读 ---------- */

.page-contact .contact-more {
  padding: clamp(34px, 5vw, 62px) 0 clamp(46px, 7vw, 86px);
  background: var(--paper);
}

.page-contact .contact-more h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.8vw, 32px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-contact .contact-more__links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  border-top: 1px solid var(--line-light);
}

.page-contact .contact-more__links li {
  border-bottom: 1px solid var(--line-light);
}

.page-contact .contact-more__links a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 14px 2px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  text-decoration: none;
  transition: color 140ms ease;
}

.page-contact .contact-more__links a::after {
  content: "\2192";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--signal);
  transition: transform 140ms ease, color 140ms ease;
}

.page-contact .contact-more__links a:hover {
  color: var(--orange);
}

.page-contact .contact-more__links a:hover::after {
  color: var(--orange);
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-contact .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .channel-list li {
    grid-template-columns: 92px 1fr;
    gap: 14px;
    align-items: baseline;
  }

  .page-contact .channel-list--plain li {
    display: block;
  }

  .page-contact .contact-address__text h2 {
    letter-spacing: -0.025em;
  }
}

@media (min-width: 880px) {
  .page-contact .contact-intro__grid {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
    gap: 48px;
  }

  .page-contact .contact-channels__grid {
    grid-template-columns: 1.12fr 1fr;
    align-items: start;
    gap: 32px;
  }

  .page-contact .channel-card--biz {
    margin-top: 72px;
  }

  .page-contact .channel-card:hover {
    transform: translateY(-2px);
    border-color: var(--orange);
  }

  .page-contact .contact-response__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .page-contact .contact-scenes__head {
    grid-template-columns: 1.2fr 1fr;
    align-items: end;
    gap: 28px;
  }

  .page-contact .process-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .page-contact .process-list li {
    border-left: 0;
    border-top: 2px solid var(--text);
    padding: 20px 26px 0 0;
  }
}

@media (min-width: 1080px) {
  .page-contact .scene-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .scene-card:first-child {
    grid-column: span 2;
  }

  .page-contact .contact-address__text {
    max-width: 580px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .scene-card,
  .page-contact .contact-more__links a,
  .page-contact .contact-more__links a::after {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .contact-more__links a:hover::after {
    transform: none;
  }
}